May 3, 2007,
Depew, NY, USA  PCB Piezotronics (PCB&REG;) a world leader
in the design and manufacture of vibration, acoustic, pressure,
force, and torque sensors, has introduced Model 377A13, a prepolarized,
1/2" pressure response type microphone, operating from ICPâ
sensor power, which offers extended frequency capability to 20k
Hz (+ 2 dB). This microphone is designed for applications requiring
matching magnitude and phase at any position, to properly measure
changes caused by microphone presence in the sound field, such
as those required in confined spaces, like small cavities, couplers,
or impedance tubes.

Previously, almost
all ½" pressure response microphones were limited
to a maximum frequency of 10k Hz to 12k Hz, and thus could not
be used in applications requiring full audible range. New Model
377A13 has a frequency range of 4 to 20k Hz (+ 2 dB). The maximum
linear dynamic range has been increased to 160 dB, with a low
noise floor rating of 20 dB(A). It has an operating temperature
of -40 to +120 oC.

PCB&REG; carries
a full line of prepolarized condenser microphone and preamplifiers.
Powered by a 2-20 mA signal conditioner and standard coaxial
cables, these modern designs have become popular, due to significant
savings in power supplies and cabling, and "ease of use."
Prepolarized designs can be used with the same constant current
source required for ICPâ accelerometers, allowing microphones
to be used alongside accelerometers in the same test, minimizing
set-up time. PCB&REG; also offers traditional externally polarized
microphones that run from a 200V power supply. For detailed product
specifications, drawings or additional information, please visit
www.pcb.com.

PCB and ICP are registered trademarks of PCB Group Inc.
PCB Piezotronics is a global leader in the design and manufacture
of sensors for the measurement of force, torque, load, strain,
pressure, acoustics, shock, vibration and acceleration.
The company also specialises in industrial vibration monitoring
instrumentation for continuous vibration monitoring, predictive
maintenance and 24/7 machinery protection.
PCB&REG; operates under a policy of Total Customer Satisfaction.
This policy is not only supported by value for money products,
but also by lifetime warranty plusFor more
information, please contact :-